1970ish Foxi deluxe gt engine locked up

So im rebuilding this thing and ive never touched a moped in my life. Anyways i was opening this thing on the side of the engine and this pink goo just fellpicst anx then i cpuldnt really figure out how to pull off the sachs cover on the other side to clean the pads or whatever i hear like to mess up in these things. So can you all help me ill give more details if someone can help me out i just am trying to give up on cars because they all stink and i wanna learn to work on these little things i can post pic too as needed